Can hydroxyurea prevent priapism?

Let me try: Priapism is a rare condition which causes a persistent, and often painful, penile erection. An antineoplastic drug (hydroxyurea) may prevent future episodes of priapism for patients with sickle cell disease.

Maybe: I think you are asking about Hydroxyurea in the treatment of sickle cell anemia. There are some medical publications that show that treatment with Hydroxyurea may decrease or prevent priapism in people with sickle cell anemia.